大笔款 meaning in Chinese

heavy money

A would you like help me withdraw a large amount of cash from my account right now
你能帮我从我的帐户里马上提取一大笔款吗
In addition they need to know the provenance of the funds where the money has come from for large deposits even if they have been deposited some time ago
而且，尽管申请人在不久前存了一大笔款，英国大使馆仍需要了解这部分资金的来源（这笔钱是从哪里来）。